Sensitivity and Specificity of the Modified Helicobacter Test INFAI

"Helicobacter Test INFAI with standard test Meal (1g citric acid as test meal and 75 mg C\^13 urea)~\+ The C\^13 UBT with the new test (REFEX). All patients will take Nexium mups (40 mg) orally once daily 30 min before breakfast from day 1 to 28."

No description;

Upper endoscopy where 6 biopsy samples will be obtained . Two biopsies will be taken from antrum and corpus for histology. The biopsies will be stained with Haematoxylin \& Eosin and Giemsa stains, and gastritis wilt be scored using the Updated Sydney System 12,13 Two biopsies will be taken from antrum and corpus for rapid urease test (RUT) and two biopsies will be taken from antrum and corpus for culture. All biopsy samples will be analysed in the local laboratory of the centre.

patients will take Nexium mups 40 mg orally once daily, 30 min before breakfast Nexium mups 40 mg will be discontinued after Day 28.